Still is not working at all... strange that one icon (Download) is working
I Know, And I do not think it will be fixed anytime soon.
No it is not strange.. as said above "
is not working 100% because the icon have to already be cached for this to work", So if download folder work then the icon for that folder have already been shown and cached and that is why it works
(I guess that your fist tab named "documents" is created first. So it starts to fetch icons so when this tab is created and shown that icons is then in the cache)